IEC 63155:2020 pdf download

IEC 63155:2020 pdf download.Guidelines for the measurement method of power durability for surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices in radio frequency (RF) applications
1 Scope
This document defines the measurement method for the determination of the durability of radio frequency (RF) surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices, such as filters and duplexers, with respect to high power RF signals, which are used in telecommunications, measuring equipment, radar systems and consumer products. RF BAW devices include two types: those based on the film bulk acoustic resonator (FBAR) technology and those based on the solidly mounted resonator (SMR) technology. This document includes basic properties of failure of RF SAW/BAW devices, and guidelines to set up the measurement system and to establish the procedure to estimate the time to failure (TF). Since TF is mainly governed by the RF power applied in the devices, discussions are focused on the power durability. It is not the aim of this document to explain the theory, or to attempt to cover all the eventualities which can arise in practical circumstances. This document draws attention to some of the more fundamental questions which will need to be considered by the user before he/she places an order for an RF SAW/BAW device for a new application. Such a procedure will be the user’s means of preventing unsatisfactory performance related to premature device failure resulting from high-power exposure of RF SAW/BAW devices.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
3.1 General terms 3.1.1 BAW bulk acoustic wave acoustic wave, propagating between the top and bottom surface of a piezoelectric structure and then traversing the entire thickness of the piezoelectric bulk Note 1 to entry: The wave is excited by metal electrodes attached to both sides of the piezoelectric layer. [SOURCE: IEC 62575-1 :201 5, 3.1 .1 ] 3.1.2 BAW filter bulk acoustic wave filter filter characterised by a bulk acoustic wave which is usually generated by a pair of electrodes and propagates along a thin film thickness direction [SOURCE: IEC 62575-1 :201 5, 3.1 .2]3.1.3 cut-off frequency frequency of the pass band at which the relative attenuation reaches a specified value [SOURCE: IEC 60862-1 :201 5, 3.1 .2.4, modified – The reference to Figure 1 has been deleted.] 3.1.4 duplexer device used in the frequency division duplex system, which enables the system to receive and transmit signal through a common antenna simultaneously [SOURCE: IEC 62761 :201 4, 3.1 .5] 3.1.5 film bulk acoustic resonator FBAR thin film BAW resonator consisting of a piezoelectric layer sandwiched between two electrode layers with stress-free top and bottom surfaces supported mechanically at the edge on a substrate with cavity structure as shown in Figure 1 or membrane structure as an example Note 1 to entry: This note applies to the French language only. [SOURCE: IEC 62575-1 :201 5, 3.1 .3, modified – Figure 1 c) has been added.]3.1.1 0 insertion attenuation logarithmic ratio of the power delivered directly to the load impedance before insertion of the filter/duplexer to the power delivered to the load impedance after insertion of the filter/duplexer [SOURCE: IEC 62604-1 :201 5, 3.1 .2.2, modified – “duplexer” has been replaced by “filter/duplexer”.] 3.1.1 1 operating temperature range range of temperatures, over which the SAW/BAW filter/duplexer will function while maintaining its specified characteristics within specified tolerances [SOURCE: IEC 62575-1 :201 5, 3.1 .1 6, modified – “BAW filter” has been replaced by “SAW/BAW filter/duplexer”.] 3.1.1 2 output impedance impedance presented by the filter/duplexer to the load when the input is terminated by a specified source impedance [SOURCE: IEC 62604-1 :201 5, 3.1 .2.23, modified – “duplexer” has been replaced by “filter/duplexer”.] 3.1.1 3 output level power, voltage or current value delivered to the load circuit [SOURCE: IEC 62604-1 :201 5, 3.1 .2.20] 3.1.1 4 pass band band of frequencies in which the relative attenuation is equal to or less than a specified value [SOURCE: IEC 62604-1 :201 5, 3.1 .2.5]